A ball has a mass of 140g if it thrown with a velocity of 450m/s what is its kenetic energy?

When water freezes, it . contracts expands

What causes the force that pushes magma from the magma chamber through the pipe and vent of a volcano?

Which best explains how a heat pump can heat a room? cold air from the house is moved through pipes, where it absorbs thermal energy. warm air from outside is pushed into the house to replace the cold air. combustion warms the air when chemical energy is transferred to thermal energy. fuel is used to move a piston, which pushes warm air into the house.